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XDCx.go
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XDCx.go
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package XDCx
import (
"errors"
"fmt"
"math/big"
"strconv"
"time"
"github.com/XinFinOrg/XDPoSChain/XDCx/tradingstate"
"github.com/XinFinOrg/XDPoSChain/XDCxDAO"
"github.com/XinFinOrg/XDPoSChain/consensus"
"github.com/XinFinOrg/XDPoSChain/core/types"
"github.com/XinFinOrg/XDPoSChain/p2p"
"gopkg.in/karalabe/cookiejar.v2/collections/prque"
"github.com/XinFinOrg/XDPoSChain/common"
"github.com/XinFinOrg/XDPoSChain/core/state"
"github.com/XinFinOrg/XDPoSChain/log"
"github.com/XinFinOrg/XDPoSChain/rpc"
lru "github.com/hashicorp/golang-lru"
"golang.org/x/sync/syncmap"
)
const (
ProtocolName = "XDCx"
ProtocolVersion = uint64(1)
ProtocolVersionStr = "1.0"
overflowIdx // Indicator of message queue overflow
defaultCacheLimit = 1024
MaximumTxMatchSize = 1000
)
var (
ErrNonceTooHigh = errors.New("nonce too high")
ErrNonceTooLow = errors.New("nonce too low")
)
type Config struct {
DataDir string `toml:",omitempty"`
DBEngine string `toml:",omitempty"`
DBName string `toml:",omitempty"`
ConnectionUrl string `toml:",omitempty"`
ReplicaSetName string `toml:",omitempty"`
}
// DefaultConfig represents (shocker!) the default configuration.
var DefaultConfig = Config{
DataDir: "",
}
type XDCX struct {
// Order related
db XDCxDAO.XDCXDAO
mongodb XDCxDAO.XDCXDAO
Triegc *prque.Prque // Priority queue mapping block numbers to tries to gc
StateCache tradingstate.Database // State database to reuse between imports (contains state cache) *XDCx_state.TradingStateDB
orderNonce map[common.Address]*big.Int
sdkNode bool
settings syncmap.Map // holds configuration settings that can be dynamically changed
tokenDecimalCache *lru.Cache
orderCache *lru.Cache
}
func (XDCx *XDCX) Protocols() []p2p.Protocol {
return []p2p.Protocol{}
}
func (XDCx *XDCX) Start(server *p2p.Server) error {
return nil
}
func (XDCx *XDCX) SaveData() {
}
func (XDCx *XDCX) Stop() error {
return nil
}
func NewLDBEngine(cfg *Config) *XDCxDAO.BatchDatabase {
datadir := cfg.DataDir
batchDB := XDCxDAO.NewBatchDatabaseWithEncode(datadir, 0)
return batchDB
}
func NewMongoDBEngine(cfg *Config) *XDCxDAO.MongoDatabase {
mongoDB, err := XDCxDAO.NewMongoDatabase(nil, cfg.DBName, cfg.ConnectionUrl, cfg.ReplicaSetName, 0)
if err != nil {
log.Crit("Failed to init mongodb engine", "err", err)
}
return mongoDB
}
func New(cfg *Config) *XDCX {
tokenDecimalCache, _ := lru.New(defaultCacheLimit)
orderCache, _ := lru.New(tradingstate.OrderCacheLimit)
XDCX := &XDCX{
orderNonce: make(map[common.Address]*big.Int),
Triegc: prque.New(),
tokenDecimalCache: tokenDecimalCache,
orderCache: orderCache,
}
// default DBEngine: levelDB
XDCX.db = NewLDBEngine(cfg)
XDCX.sdkNode = false
if cfg.DBEngine == "mongodb" { // this is an add-on DBEngine for SDK nodes
XDCX.mongodb = NewMongoDBEngine(cfg)
XDCX.sdkNode = true
}
XDCX.StateCache = tradingstate.NewDatabase(XDCX.db)
XDCX.settings.Store(overflowIdx, false)
return XDCX
}
// Overflow returns an indication if the message queue is full.
func (XDCx *XDCX) Overflow() bool {
val, _ := XDCx.settings.Load(overflowIdx)
return val.(bool)
}
func (XDCx *XDCX) IsSDKNode() bool {
return XDCx.sdkNode
}
func (XDCx *XDCX) GetLevelDB() XDCxDAO.XDCXDAO {
return XDCx.db
}
func (XDCx *XDCX) GetMongoDB() XDCxDAO.XDCXDAO {
return XDCx.mongodb
}
// APIs returns the RPC descriptors the XDCX implementation offers
func (XDCx *XDCX) APIs() []rpc.API {
return []rpc.API{
{
Namespace: ProtocolName,
Version: ProtocolVersionStr,
Service: NewPublicXDCXAPI(XDCx),
Public: true,
},
}
}
// Version returns the XDCX sub-protocols version number.
func (XDCx *XDCX) Version() uint64 {
return ProtocolVersion
}
func (XDCx *XDCX) ProcessOrderPending(header *types.Header, coinbase common.Address, chain consensus.ChainContext, pending map[common.Address]types.OrderTransactions, statedb *state.StateDB, XDCXstatedb *tradingstate.TradingStateDB) ([]tradingstate.TxDataMatch, map[common.Hash]tradingstate.MatchingResult) {
txMatches := []tradingstate.TxDataMatch{}
matchingResults := map[common.Hash]tradingstate.MatchingResult{}
txs := types.NewOrderTransactionByNonce(types.OrderTxSigner{}, pending)
numberTx := 0
for {
tx := txs.Peek()
if tx == nil {
break
}
if numberTx > MaximumTxMatchSize {
break
}
numberTx++
log.Debug("ProcessOrderPending start", "len", len(pending))
log.Debug("Get pending orders to process", "address", tx.UserAddress(), "nonce", tx.Nonce())
V, R, S := tx.Signature()
bigstr := V.String()
n, e := strconv.ParseInt(bigstr, 10, 8)
if e != nil {
continue
}
order := &tradingstate.OrderItem{
Nonce: big.NewInt(int64(tx.Nonce())),
Quantity: tx.Quantity(),
Price: tx.Price(),
ExchangeAddress: tx.ExchangeAddress(),
UserAddress: tx.UserAddress(),
BaseToken: tx.BaseToken(),
QuoteToken: tx.QuoteToken(),
Status: tx.Status(),
Side: tx.Side(),
Type: tx.Type(),
Hash: tx.OrderHash(),
OrderID: tx.OrderID(),
Signature: &tradingstate.Signature{
V: byte(n),
R: common.BigToHash(R),
S: common.BigToHash(S),
},
}
cancel := false
if order.Status == tradingstate.OrderStatusCancelled {
cancel = true
}
log.Info("Process order pending", "orderPending", order, "BaseToken", order.BaseToken.Hex(), "QuoteToken", order.QuoteToken)
originalOrder := &tradingstate.OrderItem{}
*originalOrder = *order
originalOrder.Quantity = tradingstate.CloneBigInt(order.Quantity)
if cancel {
order.Status = tradingstate.OrderStatusCancelled
}
newTrades, newRejectedOrders, err := XDCx.CommitOrder(header, coinbase, chain, statedb, XDCXstatedb, tradingstate.GetTradingOrderBookHash(order.BaseToken, order.QuoteToken), order)
for _, reject := range newRejectedOrders {
log.Debug("Reject order", "reject", *reject)
}
switch err {
case ErrNonceTooLow:
// New head notification data race between the transaction pool and miner, shift
log.Debug("Skipping order with low nonce", "sender", tx.UserAddress(), "nonce", tx.Nonce())
txs.Shift()
continue
case ErrNonceTooHigh:
// Reorg notification data race between the transaction pool and miner, skip account =
log.Debug("Skipping order account with high nonce", "sender", tx.UserAddress(), "nonce", tx.Nonce())
txs.Pop()
continue
case nil:
// everything ok
txs.Shift()
default:
// Strange error, discard the transaction and get the next in line (note, the
// nonce-too-high clause will prevent us from executing in vain).
log.Debug("Transaction failed, account skipped", "hash", tx.Hash(), "err", err)
txs.Shift()
continue
}
// orderID has been updated
originalOrder.OrderID = order.OrderID
originalOrder.ExtraData = order.ExtraData
originalOrderValue, err := tradingstate.EncodeBytesItem(originalOrder)
if err != nil {
log.Error("Can't encode", "order", originalOrder, "err", err)
continue
}
txMatch := tradingstate.TxDataMatch{
Order: originalOrderValue,
}
txMatches = append(txMatches, txMatch)
matchingResults[tradingstate.GetMatchingResultCacheKey(order)] = tradingstate.MatchingResult{
Trades: newTrades,
Rejects: newRejectedOrders,
}
}
return txMatches, matchingResults
}
// return average price of the given pair in the last epoch
func (XDCx *XDCX) GetAveragePriceLastEpoch(chain consensus.ChainContext, statedb *state.StateDB, tradingStateDb *tradingstate.TradingStateDB, baseToken common.Address, quoteToken common.Address) (*big.Int, error) {
price := tradingStateDb.GetMediumPriceBeforeEpoch(tradingstate.GetTradingOrderBookHash(baseToken, quoteToken))
if price != nil && price.Sign() > 0 {
log.Debug("GetAveragePriceLastEpoch", "baseToken", baseToken.Hex(), "quoteToken", quoteToken.Hex(), "price", price)
return price, nil
} else {
inversePrice := tradingStateDb.GetMediumPriceBeforeEpoch(tradingstate.GetTradingOrderBookHash(quoteToken, baseToken))
log.Debug("GetAveragePriceLastEpoch", "baseToken", baseToken.Hex(), "quoteToken", quoteToken.Hex(), "inversePrice", inversePrice)
if inversePrice != nil && inversePrice.Sign() > 0 {
quoteTokenDecimal, err := XDCx.GetTokenDecimal(chain, statedb, quoteToken)
if err != nil || quoteTokenDecimal.Sign() == 0 {
return nil, fmt.Errorf("fail to get tokenDecimal. Token: %v . Err: %v", quoteToken.String(), err)
}
baseTokenDecimal, err := XDCx.GetTokenDecimal(chain, statedb, baseToken)
if err != nil || baseTokenDecimal.Sign() == 0 {
return nil, fmt.Errorf("fail to get tokenDecimal. Token: %v . Err: %v", baseToken.String(), err)
}
price = new(big.Int).Mul(baseTokenDecimal, quoteTokenDecimal)
price = new(big.Int).Div(price, inversePrice)
log.Debug("GetAveragePriceLastEpoch", "baseToken", baseToken.Hex(), "quoteToken", quoteToken.Hex(), "baseTokenDecimal", baseTokenDecimal, "quoteTokenDecimal", quoteTokenDecimal, "inversePrice", inversePrice)
return price, nil
}
}
return nil, nil
}
// return tokenQuantity (after convert from XDC to token), tokenPriceInXDC, error
func (XDCx *XDCX) ConvertXDCToToken(chain consensus.ChainContext, statedb *state.StateDB, tradingStateDb *tradingstate.TradingStateDB, token common.Address, quantity *big.Int) (*big.Int, *big.Int, error) {
if token.String() == common.XDCNativeAddress {
return quantity, common.BasePrice, nil
}
tokenPriceInXDC, err := XDCx.GetAveragePriceLastEpoch(chain, statedb, tradingStateDb, token, common.HexToAddress(common.XDCNativeAddress))
if err != nil || tokenPriceInXDC == nil || tokenPriceInXDC.Sign() <= 0 {
return common.Big0, common.Big0, err
}
tokenDecimal, err := XDCx.GetTokenDecimal(chain, statedb, token)
if err != nil || tokenDecimal.Sign() == 0 {
return common.Big0, common.Big0, fmt.Errorf("fail to get tokenDecimal. Token: %v . Err: %v", token.String(), err)
}
tokenQuantity := new(big.Int).Mul(quantity, tokenDecimal)
tokenQuantity = new(big.Int).Div(tokenQuantity, tokenPriceInXDC)
return tokenQuantity, tokenPriceInXDC, nil
}
// there are 3 tasks need to complete to update data in SDK nodes after matching
// 1. txMatchData.Order: order has been processed. This order should be put to `orders` collection with status sdktypes.OrderStatusOpen
// 2. txMatchData.Trades: includes information of matched orders.
// a. PutObject them to `trades` collection
// b. Update status of regrading orders to sdktypes.OrderStatusFilled
func (XDCx *XDCX) SyncDataToSDKNode(takerOrderInTx *tradingstate.OrderItem, txHash common.Hash, txMatchTime time.Time, statedb *state.StateDB, trades []map[string]string, rejectedOrders []*tradingstate.OrderItem, dirtyOrderCount *uint64) error {
var (
// originTakerOrder: order get from db, nil if it doesn't exist
// takerOrderInTx: order decoded from txdata
// updatedTakerOrder: order with new status, filledAmount, CreatedAt, UpdatedAt. This will be inserted to db
originTakerOrder, updatedTakerOrder *tradingstate.OrderItem
makerDirtyHashes []string
makerDirtyFilledAmount map[string]*big.Int
err error
)
db := XDCx.GetMongoDB()
db.InitBulk()
if takerOrderInTx.Status == tradingstate.OrderStatusCancelled && len(rejectedOrders) > 0 {
// cancel order is rejected -> nothing change
log.Debug("Cancel order is rejected", "order", tradingstate.ToJSON(takerOrderInTx))
return nil
}
// 1. put processed takerOrderInTx to db
lastState := tradingstate.OrderHistoryItem{}
val, err := db.GetObject(takerOrderInTx.Hash, &tradingstate.OrderItem{})
if err == nil && val != nil {
originTakerOrder = val.(*tradingstate.OrderItem)
lastState = tradingstate.OrderHistoryItem{
TxHash: originTakerOrder.TxHash,
FilledAmount: tradingstate.CloneBigInt(originTakerOrder.FilledAmount),
Status: originTakerOrder.Status,
UpdatedAt: originTakerOrder.UpdatedAt,
}
}
if originTakerOrder != nil {
updatedTakerOrder = originTakerOrder
} else {
updatedTakerOrder = takerOrderInTx
updatedTakerOrder.FilledAmount = new(big.Int)
}
if takerOrderInTx.Status != tradingstate.OrderStatusCancelled {
updatedTakerOrder.Status = tradingstate.OrderStatusOpen
} else {
updatedTakerOrder.Status = tradingstate.OrderStatusCancelled
updatedTakerOrder.ExtraData = takerOrderInTx.ExtraData
}
updatedTakerOrder.TxHash = txHash
if updatedTakerOrder.CreatedAt.IsZero() {
updatedTakerOrder.CreatedAt = txMatchTime
}
if txMatchTime.Before(updatedTakerOrder.UpdatedAt) || (txMatchTime.Equal(updatedTakerOrder.UpdatedAt) && *dirtyOrderCount == 0) {
log.Debug("Ignore old orders/trades taker", "txHash", txHash.Hex(), "txTime", txMatchTime.UnixNano(), "updatedAt", updatedTakerOrder.UpdatedAt.UnixNano())
return nil
}
*dirtyOrderCount++
XDCx.UpdateOrderCache(updatedTakerOrder.BaseToken, updatedTakerOrder.QuoteToken, updatedTakerOrder.Hash, txHash, lastState)
updatedTakerOrder.UpdatedAt = txMatchTime
// 2. put trades to db and update status to FILLED
log.Debug("Got trades", "number", len(trades), "txhash", txHash.Hex())
makerDirtyFilledAmount = make(map[string]*big.Int)
for _, trade := range trades {
// 2.a. put to trades
if trade == nil {
continue
}
tradeRecord := &tradingstate.Trade{}
quantity := tradingstate.ToBigInt(trade[tradingstate.TradeQuantity])
price := tradingstate.ToBigInt(trade[tradingstate.TradePrice])
if price.Cmp(big.NewInt(0)) <= 0 || quantity.Cmp(big.NewInt(0)) <= 0 {
return fmt.Errorf("trade misses important information. tradedPrice %v, tradedQuantity %v", price, quantity)
}
tradeRecord.Amount = quantity
tradeRecord.PricePoint = price
tradeRecord.BaseToken = updatedTakerOrder.BaseToken
tradeRecord.QuoteToken = updatedTakerOrder.QuoteToken
tradeRecord.Status = tradingstate.TradeStatusSuccess
tradeRecord.Taker = updatedTakerOrder.UserAddress
tradeRecord.Maker = common.HexToAddress(trade[tradingstate.TradeMaker])
tradeRecord.TakerOrderHash = updatedTakerOrder.Hash
tradeRecord.MakerOrderHash = common.HexToHash(trade[tradingstate.TradeMakerOrderHash])
tradeRecord.TxHash = txHash
tradeRecord.TakerOrderSide = updatedTakerOrder.Side
tradeRecord.TakerExchange = updatedTakerOrder.ExchangeAddress
tradeRecord.MakerExchange = common.HexToAddress(trade[tradingstate.TradeMakerExchange])
tradeRecord.MakeFee, _ = new(big.Int).SetString(trade[tradingstate.MakerFee], 10)
tradeRecord.TakeFee, _ = new(big.Int).SetString(trade[tradingstate.TakerFee], 10)
// set makerOrderType, takerOrderType
tradeRecord.MakerOrderType = trade[tradingstate.MakerOrderType]
tradeRecord.TakerOrderType = updatedTakerOrder.Type
if tradeRecord.CreatedAt.IsZero() {
tradeRecord.CreatedAt = txMatchTime
}
tradeRecord.UpdatedAt = txMatchTime
tradeRecord.Hash = tradeRecord.ComputeHash()
log.Debug("TRADE history", "amount", tradeRecord.Amount, "pricepoint", tradeRecord.PricePoint,
"taker", tradeRecord.Taker.Hex(), "maker", tradeRecord.Maker.Hex(), "takerOrder", tradeRecord.TakerOrderHash.Hex(), "makerOrder", tradeRecord.MakerOrderHash.Hex(),
"takerFee", tradeRecord.TakeFee, "makerFee", tradeRecord.MakeFee)
if err := db.PutObject(tradeRecord.Hash, tradeRecord); err != nil {
return fmt.Errorf("SDKNode: failed to store tradeRecord %s", err.Error())
}
// 2.b. update status and filledAmount
filledAmount := quantity
// maker dirty order
makerFilledAmount := big.NewInt(0)
if amount, ok := makerDirtyFilledAmount[trade[tradingstate.TradeMakerOrderHash]]; ok {
makerFilledAmount = tradingstate.CloneBigInt(amount)
}
makerFilledAmount = new(big.Int).Add(makerFilledAmount, filledAmount)
makerDirtyFilledAmount[trade[tradingstate.TradeMakerOrderHash]] = makerFilledAmount
makerDirtyHashes = append(makerDirtyHashes, trade[tradingstate.TradeMakerOrderHash])
//updatedTakerOrder = XDCx.updateMatchedOrder(updatedTakerOrder, filledAmount, txMatchTime, txHash)
// update filledAmount, status of takerOrder
updatedTakerOrder.FilledAmount = new(big.Int).Add(updatedTakerOrder.FilledAmount, filledAmount)
if updatedTakerOrder.FilledAmount.Cmp(updatedTakerOrder.Quantity) < 0 && updatedTakerOrder.Type == tradingstate.Limit {
updatedTakerOrder.Status = tradingstate.OrderStatusPartialFilled
} else {
updatedTakerOrder.Status = tradingstate.OrderStatusFilled
}
}
// for Market orders
// filledAmount > 0 : FILLED
// otherwise: REJECTED
if updatedTakerOrder.Type == tradingstate.Market {
if updatedTakerOrder.FilledAmount.Sign() > 0 {
updatedTakerOrder.Status = tradingstate.OrderStatusFilled
} else {
updatedTakerOrder.Status = tradingstate.OrderStatusRejected
}
}
log.Debug("PutObject processed takerOrder",
"userAddr", updatedTakerOrder.UserAddress.Hex(), "side", updatedTakerOrder.Side,
"price", updatedTakerOrder.Price, "quantity", updatedTakerOrder.Quantity, "filledAmount", updatedTakerOrder.FilledAmount, "status", updatedTakerOrder.Status,
"hash", updatedTakerOrder.Hash.Hex(), "txHash", updatedTakerOrder.TxHash.Hex())
if err := db.PutObject(updatedTakerOrder.Hash, updatedTakerOrder); err != nil {
return fmt.Errorf("SDKNode: failed to put processed takerOrder. Hash: %s Error: %s", updatedTakerOrder.Hash.Hex(), err.Error())
}
items := db.GetListItemByHashes(makerDirtyHashes, &tradingstate.OrderItem{})
if items != nil {
makerOrders := items.([]*tradingstate.OrderItem)
log.Debug("Maker dirty orders", "len", len(makerOrders), "txhash", txHash.Hex())
for _, o := range makerOrders {
if txMatchTime.Before(o.UpdatedAt) {
log.Debug("Ignore old orders/trades maker", "txHash", txHash.Hex(), "txTime", txMatchTime.UnixNano(), "updatedAt", updatedTakerOrder.UpdatedAt.UnixNano())
continue
}
lastState = tradingstate.OrderHistoryItem{
TxHash: o.TxHash,
FilledAmount: tradingstate.CloneBigInt(o.FilledAmount),
Status: o.Status,
UpdatedAt: o.UpdatedAt,
}
XDCx.UpdateOrderCache(o.BaseToken, o.QuoteToken, o.Hash, txHash, lastState)
o.TxHash = txHash
o.UpdatedAt = txMatchTime
o.FilledAmount = new(big.Int).Add(o.FilledAmount, makerDirtyFilledAmount[o.Hash.Hex()])
if o.FilledAmount.Cmp(o.Quantity) < 0 {
o.Status = tradingstate.OrderStatusPartialFilled
} else {
o.Status = tradingstate.OrderStatusFilled
}
log.Debug("PutObject processed makerOrder",
"userAddr", o.UserAddress.Hex(), "side", o.Side,
"price", o.Price, "quantity", o.Quantity, "filledAmount", o.FilledAmount, "status", o.Status,
"hash", o.Hash.Hex(), "txHash", o.TxHash.Hex())
if err := db.PutObject(o.Hash, o); err != nil {
return fmt.Errorf("SDKNode: failed to put processed makerOrder. Hash: %s Error: %s", o.Hash.Hex(), err.Error())
}
}
}
// 3. put rejected orders to db and update status REJECTED
log.Debug("Got rejected orders", "number", len(rejectedOrders), "rejectedOrders", rejectedOrders)
if len(rejectedOrders) > 0 {
var rejectedHashes []string
// updateRejectedOrders
for _, rejectedOrder := range rejectedOrders {
rejectedHashes = append(rejectedHashes, rejectedOrder.Hash.Hex())
if updatedTakerOrder.Hash == rejectedOrder.Hash && !txMatchTime.Before(updatedTakerOrder.UpdatedAt) {
// cache order history for handling reorg
orderHistoryRecord := tradingstate.OrderHistoryItem{
TxHash: updatedTakerOrder.TxHash,
FilledAmount: tradingstate.CloneBigInt(updatedTakerOrder.FilledAmount),
Status: updatedTakerOrder.Status,
UpdatedAt: updatedTakerOrder.UpdatedAt,
}
XDCx.UpdateOrderCache(updatedTakerOrder.BaseToken, updatedTakerOrder.QuoteToken, updatedTakerOrder.Hash, txHash, orderHistoryRecord)
// if whole order is rejected, status = REJECTED
// otherwise, status = FILLED
if updatedTakerOrder.FilledAmount.Sign() > 0 {
updatedTakerOrder.Status = tradingstate.OrderStatusFilled
} else {
updatedTakerOrder.Status = tradingstate.OrderStatusRejected
}
updatedTakerOrder.TxHash = txHash
updatedTakerOrder.UpdatedAt = txMatchTime
if err := db.PutObject(updatedTakerOrder.Hash, updatedTakerOrder); err != nil {
return fmt.Errorf("SDKNode: failed to reject takerOrder. Hash: %s Error: %s", updatedTakerOrder.Hash.Hex(), err.Error())
}
}
}
items := db.GetListItemByHashes(rejectedHashes, &tradingstate.OrderItem{})
if items != nil {
dirtyRejectedOrders := items.([]*tradingstate.OrderItem)
for _, order := range dirtyRejectedOrders {
if txMatchTime.Before(order.UpdatedAt) {
log.Debug("Ignore old orders/trades reject", "txHash", txHash.Hex(), "txTime", txMatchTime.UnixNano(), "updatedAt", updatedTakerOrder.UpdatedAt.UnixNano())
continue
}
// cache order history for handling reorg
orderHistoryRecord := tradingstate.OrderHistoryItem{
TxHash: order.TxHash,
FilledAmount: tradingstate.CloneBigInt(order.FilledAmount),
Status: order.Status,
UpdatedAt: order.UpdatedAt,
}
XDCx.UpdateOrderCache(order.BaseToken, order.QuoteToken, order.Hash, txHash, orderHistoryRecord)
dirtyFilledAmount, ok := makerDirtyFilledAmount[order.Hash.Hex()]
if ok && dirtyFilledAmount != nil {
order.FilledAmount = new(big.Int).Add(order.FilledAmount, dirtyFilledAmount)
}
// if whole order is rejected, status = REJECTED
// otherwise, status = FILLED
if order.FilledAmount.Sign() > 0 {
order.Status = tradingstate.OrderStatusFilled
} else {
order.Status = tradingstate.OrderStatusRejected
}
order.TxHash = txHash
order.UpdatedAt = txMatchTime
if err = db.PutObject(order.Hash, order); err != nil {
return fmt.Errorf("SDKNode: failed to update rejectedOder to sdkNode %s", err.Error())
}
}
}
}
if err := db.CommitBulk(); err != nil {
return fmt.Errorf("SDKNode fail to commit bulk update orders, trades at txhash %s . Error: %s", txHash.Hex(), err.Error())
}
return nil
}
func (XDCx *XDCX) GetTradingState(block *types.Block, author common.Address) (*tradingstate.TradingStateDB, error) {
root, err := XDCx.GetTradingStateRoot(block, author)
if err != nil {
return nil, err
}
if XDCx.StateCache == nil {
return nil, errors.New("Not initialized XDCx")
}
return tradingstate.New(root, XDCx.StateCache)
}
func (XDCX *XDCX) GetEmptyTradingState() (*tradingstate.TradingStateDB, error) {
return tradingstate.New(tradingstate.EmptyRoot, XDCX.StateCache)
}
func (XDCx *XDCX) GetStateCache() tradingstate.Database {
return XDCx.StateCache
}
func (XDCx *XDCX) HasTradingState(block *types.Block, author common.Address) bool {
root, err := XDCx.GetTradingStateRoot(block, author)
if err != nil {
return false
}
_, err = XDCx.StateCache.OpenTrie(root)
if err != nil {
return false
}
return true
}
func (XDCx *XDCX) GetTriegc() *prque.Prque {
return XDCx.Triegc
}
func (XDCx *XDCX) GetTradingStateRoot(block *types.Block, author common.Address) (common.Hash, error) {
for _, tx := range block.Transactions() {
from := *(tx.From())
if tx.To() != nil && tx.To().Hex() == common.TradingStateAddr && from.String() == author.String() {
if len(tx.Data()) >= 32 {
return common.BytesToHash(tx.Data()[:32]), nil
}
}
}
return tradingstate.EmptyRoot, nil
}
func (XDCx *XDCX) UpdateOrderCache(baseToken, quoteToken common.Address, orderHash common.Hash, txhash common.Hash, lastState tradingstate.OrderHistoryItem) {
var orderCacheAtTxHash map[common.Hash]tradingstate.OrderHistoryItem
c, ok := XDCx.orderCache.Get(txhash)
if !ok || c == nil {
orderCacheAtTxHash = make(map[common.Hash]tradingstate.OrderHistoryItem)
} else {
orderCacheAtTxHash = c.(map[common.Hash]tradingstate.OrderHistoryItem)
}
orderKey := tradingstate.GetOrderHistoryKey(baseToken, quoteToken, orderHash)
_, ok = orderCacheAtTxHash[orderKey]
if !ok {
orderCacheAtTxHash[orderKey] = lastState
}
XDCx.orderCache.Add(txhash, orderCacheAtTxHash)
}
func (XDCx *XDCX) RollbackReorgTxMatch(txhash common.Hash) error {
db := XDCx.GetMongoDB()
db.InitBulk()
items := db.GetListItemByTxHash(txhash, &tradingstate.OrderItem{})
if items != nil {
for _, order := range items.([]*tradingstate.OrderItem) {
c, ok := XDCx.orderCache.Get(txhash)
log.Debug("XDCx reorg: rollback order", "txhash", txhash.Hex(), "order", tradingstate.ToJSON(order), "orderHistoryItem", c)
if !ok {
log.Debug("XDCx reorg: remove order due to no orderCache", "order", tradingstate.ToJSON(order))
if err := db.DeleteObject(order.Hash, &tradingstate.OrderItem{}); err != nil {
log.Crit("SDKNode: failed to remove reorg order", "err", err.Error(), "order", tradingstate.ToJSON(order))
}
continue
}
orderCacheAtTxHash := c.(map[common.Hash]tradingstate.OrderHistoryItem)
orderHistoryItem, _ := orderCacheAtTxHash[tradingstate.GetOrderHistoryKey(order.BaseToken, order.QuoteToken, order.Hash)]
if (orderHistoryItem == tradingstate.OrderHistoryItem{}) {
log.Debug("XDCx reorg: remove order due to empty orderHistory", "order", tradingstate.ToJSON(order))
if err := db.DeleteObject(order.Hash, &tradingstate.OrderItem{}); err != nil {
log.Crit("SDKNode: failed to remove reorg order", "err", err.Error(), "order", tradingstate.ToJSON(order))
}
continue
}
order.TxHash = orderHistoryItem.TxHash
order.Status = orderHistoryItem.Status
order.FilledAmount = tradingstate.CloneBigInt(orderHistoryItem.FilledAmount)
order.UpdatedAt = orderHistoryItem.UpdatedAt
log.Debug("XDCx reorg: update order to the last orderHistoryItem", "order", tradingstate.ToJSON(order), "orderHistoryItem", orderHistoryItem)
if err := db.PutObject(order.Hash, order); err != nil {
log.Crit("SDKNode: failed to update reorg order", "err", err.Error(), "order", tradingstate.ToJSON(order))
}
}
}
log.Debug("XDCx reorg: DeleteTradeByTxHash", "txhash", txhash.Hex())
db.DeleteItemByTxHash(txhash, &tradingstate.Trade{})
if err := db.CommitBulk(); err != nil {
return fmt.Errorf("failed to RollbackTradingData. %v", err)
}
return nil
}